Hi, some update of my project:
after long reflection I decided to change the way of build my frame, and chose to build CNC machined bolted frame. I make my choice for many reason:
-with thermal threatment and the cost of welding JIG, CNC milled frame will be less expensive for me.
-I am more experimented in CNC mill than in aluminium weldin.
-It's reaaly easier to find a place for every component in my frame and to protect them from water and mud projection, impact.
-fabrication will be really faster ( with my tools)
here is some picture of my new design, now I need to reduce the weigh of the frame:
also I received tire and cush core insert ( in order to avoid snake bite, improve lateral rigidity of tire and alow low pression around 1 bar)
find the brakes: Hope tech3 V4 with 220mm rotor, the small 160mm rotor of my dirt bike look ridiculus compared to this: